Auxiliary strap for eyeglass frame mountings



May 13, 1941. L VITQLO 2,241,894

AUXILIARY STRAP FOR EYEGLASS'FRAME MOUNTI'NGS File'd Ndv. 13, 1940 gL-f 13 INVENTOR L Wheel-9,

BY W [b MW Patented May 13, 1941 AUXILIARY STRAP FOR EYEGLASS FRAME MOUNTINGS Louis Vitolo, Brooklyn, N. Y., assignor to Century Oxford Manufacturing Corp., Brooklyn, N. Y.

Application November 13, 1940, Serial No. 365,445

1 Claim.

My invention relates to auxiliary adjustable straps for eyeglass frames having a frame portion running along the edge of the lens but spaced from same.

The object of the invention is to provide an auxiliary strap which is mounted slidably on that portion of the frame that runs along the upper edge of the lens in spaced relation therewith, and which strap can be locked on said frame portion, by means of a screw that passes through the lens and engages the strap, and whereby said strap is locked simultaneously to the frame and to the lens.

By providing such an auxiliary strap I permit an optician to easily reinforce such type of frame as he can position that strap on the frame to suit his own purpose.

Before proceeding to a more detailed description of the invention, it must be understood that this auxiliary strap is merely intended for eyeglass frame mountings of the type in which a frame portion runs from the nose piece to the bow along the upper edge of the lens and in spaced relation therewith. This particular portion of the frame is normally not connected to the lens at any part, except the nose piece, and in consequence of constant usage the alignment of the lenses is disturbed. To prevent that, straps have been permanently attached to that portion of the frame which runs along the edge of the lens to be connected to said lens by means of a screw. It necessitated the drilling of the lens at the spot where the second strap was located and if the hole deviates slightly in drilling a strain is bound to result when the frame portion at the strap is connected to the lens.

To obviate this objection, I have provided a strap which normally can be made to slide on that frame portion which extends along the upper lens edge and spaced therefrom, so that the optician in fitting can suit himself where to connect the strap to the lens. Furthermore, a slight deviation in the hole while drilling compensates itself due to the fact that the strap is slidably mounted on the frame portion, and the screw by means of which the lens is secured to the strap passes through separate jaws of the strap, thereby locking the strap on the frame portion.

In the appended drawing forming part of this application,

Figure 1 is an elevation from the inner face of the lens of one portion of a frame mounting, illustrating the application of my auxiliary strap thereto.

Figure 2 is a similar elevation from the outer face of the lens.

Figure 3 is an enlarged section on line 33, Figure 1, and

Figure 4 is an enlarged perspective View of a strap, embodying my invention.

Referring to the drawing, 5 is the nose piece of the frame, which has the customary straps 6, each to receive a lens I and secure it to the nose piece. Extending from the strap and running along the upper edge of the lens I is a frame portion 8, which is rigidly secured to the nose piece 5 with one end thereof, and the other end 9 terminates with a yoke to receive the ends of the bow not shown. To secure the portion of the frame 8 in proximity of the yoke 9, I provide a strap I 0 which has a jaw II, another jaw I2 and a loop I3 uniting the two jaws. The loop I3 and the jaw II are preferably of a lighter gauge than the jaw I2, which is provided with a threaded aperture I4 adapted to align with the aperture I5 inthe jaw II.

The loop l3 of the strap I0 can be shaped to the conformity of the cross-section of the frame portion 8. As shown in the drawing, it is circular but if it is oval or angular in cross-section, the loop I3 can be easily shaped by pliers to conform to the cross-sectional shape of the frame portion 8, so that it will easily slide thereon. Naturally, in shaping the loop to the conformity of the cross-section of the frame portion 8, the apertures l4 and I5 are maintained in alignment. In securing the strap IE! to the proximate lens when it has been slidably mounted on the frame portion 8, the optician selects a desired spot on the lens along the frame portion 8 where he desires to secure the strap, and drills through the lens to receive a screw I6, which is made to pass first through the jaw ll before it can be threaded into the aperture I4 of the jaw I2.

As it will be seen, the jaws II and I2 are both disposed on the inner face of the lens in the plane thereof, and it will also be noted that the opening I5 in the jaw II is made larger than the screw, so that errors in drilling could be compensated. In securing the strap to the lens it is simultaneously locked to the frame portion, thereby making a rigid connection between the frame portion 8 and the lens in proximity of the yoke 9.

By providing a strap described, I permit an optician to easily and economically reinforce a type of frame described without much labor and risk of injuring the lens in attaching the auxiliary strap.

tion, one of said jaws and said loop being of a lighter gauge than the other jaw, said jaws having aligning apertures, the aperture in the jaw of the heavier gauge being threaded to receive a screw, and a screw adapted to pass first through the lens and then through said jaws to secure the strap to the lens and to the frame portion simultaneously.

LOUIS VITOLO. 

